Route · BWI → SFO · 2020–2025 BTS data
Baltimore to San Francisco
The BWI–SFO corridor (Baltimore, MD → San Francisco, CA) runs ahead of the national average, served by 3 carriers across roughly 2,457 miles.
Data updated 2026-06-13
- 83.9%
- On-time
- +4.9 pts
- vs US avg
- 61 min
- Delay when late
- 2,310
- Flights
Cancelled
1.9%
Best Month
May 2025 88%
Worst Month
Dec 2025 65%
Distance
2,457 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 86 | 30 | 1 | 1 | WN,UA |
| Nov 2025 | 80 | 15 | 0 | 0 | UA,WN |
| Oct 2025 | 106 | 16 | 0 | 0 | UA,WN |
| Sep 2025 | 85 | 21 | 0 | 0 | UA,WN |
| Aug 2025 | 103 | 26 | 0 | 0 | WN,UA |
| Jul 2025 | 115 | 32 | 1 | 0 | UA,WN |
| Jun 2025 | 110 | 27 | 1 | 0 | UA,WN |
| May 2025 | 67 | 8 | 0 | 0 | UA |
| Apr 2025 | 55 | 7 | 0 | 0 | UA |
| Mar 2025 | 33 | 3 | 0 | 0 | UA |
| Jan 2025 | 31 | 1 | 2 | 0 | UA |
| Dec 2024 | 33 | 2 | 0 | 1 | UA |
| Nov 2024 | 48 | 5 | 0 | 0 | UA |
| Oct 2024 | 48 | 5 | 0 | 0 | UA |
| Sep 2024 | 48 | 2 | 0 | 0 | UA |
| Aug 2024 | 50 | 9 | 2 | 0 | UA |
| Jul 2024 | 54 | 14 | 1 | 0 | UA |
| Jun 2024 | 30 | 13 | 1 | 0 | UA |
| May 2024 | 31 | 9 | 1 | 0 | UA |
| Apr 2024 | 30 | 1 | 0 | 0 | UA |
| Mar 2024 | 31 | 1 | 0 | 0 | UA |
| Jan 2024 | 31 | 2 | 15 | 0 | UA |
| Dec 2023 | 42 | 5 | 1 | 1 | UA |
| Nov 2023 | 49 | 3 | 0 | 0 | UA |
Cancellation Rate
1.9%
26 of 1,396 flights
Diversion Rate
0.2%
3 of 1,396 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
BWI - Baltimore
Full on-time, delay-cause, and seasonal performance for Baltimore, MD.
Origin airport →SFO - San Francisco
Full on-time, delay-cause, and seasonal performance for San Francisco, CA.
Destination airport →Compare the two airports
See BWI and SFO side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to BWI–SFO.
Routes with a similar on-time rate
What the Data Says About BWI to SFO
Bureau of Transportation Statistics records show Baltimore to San Francisco (BWI to SFO) running a 83.9% on-time rate over 2,310 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 60.6 minutes. The 2,457-mile corridor is served by 3 carriers, and over the last 24 months 1.9% of 1,396 flights were cancelled, 0.2% diverted.
The monthly split is wide on this route: May 2025 posted the strongest performance at 88% on-time, while Dec 2025 came in at just 65% - a 23-point swing worth factoring into travel timing.
Frequently Asked Questions
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.